Harrisia pomanensis is a columnar cactus native to Argentina and Bolivia. It has green, ribbed stems with prominent spines. Large, nocturnal white flowers produce edible.
Above information is sourced from Wikipedia
© Leonardo Adrián LEIVA (CC-BY-NC)
© (c) Rosario, some rights reserved (CC BY)
© no rights reserved
© (c) Jose Luis Navarro, some rights reserved (CC BY)
© (c) Patricio Cowper Coles, some rights reserved (CC BY)